4-bet
A re-raise against a 3-bet, i.e. the fourth bet in the sequence.
In depth
A **4-bet** is a re-raise made in response to a 3-bet, representing the fourth bet in a betting sequence. It occurs when a player raises after an initial raise, a 3-bet, and typically signals a strong hand or a strategic bluff as the pot grows. This action follows the 3-bet and precedes any potential 5-bet, shaping preflop dynamics.
Chinese: 4-bet（对3-bet再加注）